Improvement in machines for flinting and glazing leather



GEORGE CROSSLEY.

improvement in Machines for Flinting and Glazing Leather. No. 123,681.Patented Feb.13,'1872.

UNITED STATES A'I'ENI' OFFICE.

GEORGE GROSSLEY, ()F PHILADELPHIA, PENNSYLVANIA.

Specification forming part of Letters Patent No. 123,681, dated February13, 1872.

SPECIFICATION DESCRIBING A MACHINE Eon FLINTING AND GLAZING MoRoCCo. Towhom, it may concern:

Be it known that I, GEORGE OROSSLEY, of

p the city of Philadelphia and State of Pennsylvania, have invented acertain new and useful combination of mechanic appliances orinstrumentalities for imparting reciprocal horizontal rectilinearmovements to a tool-bearing suspensory or vibratory bar; and do herebydeclare the following to be a full, clear, and exact descriptionthereof, due reference being had to the accompanying drawing making partof this specification, and in which verselevers attached to a fly-wheelby means of a double crank with slotted plate in such amair ner as toproduce vibratory reciprocatingmovements of its lower extremity, therebysimultaneously elevating and depressing alternately the plunger ortool-bearer in its passage back and forth across an underlying plane ortablet.

In principle my invention is obviously susceptible of application tovarious new and useful purposes in mechanic arts; but, inasmuch as myexperiments in perfecting it have been chiefly confined to theascertainment of its peculiar adaptability for serviceable use in thefiinting and glazing of morocco, I have thought it best, for sake ofcertainty and definiteness,

' to limit my description to the purpose to which I have practicallydemonstrated it can be successfully applied.

In the drawing accompanying and makingpart of this specification, Adenotes a vertical bar or vibrator suspended by a roller, 1), resting onguides B, and having attached to its lower extremity the plunger ortool-bearer holding the agate or polishing-stone c. O and- D are leversattached, by a double crank, F, to fly-wheel E, which, by its rotation,together with the combined simultaneous and reciprocal movementsimparted by the double crank F to the lever D acting on the plunger 01/by means of the fulcrum at d, causes the attached agate orpolishing-stone c to be brought forcibly in contact with and to exert adownward pressure on the horizontal tablet e e e 6 while passing from Hto G, and to be so lifted as to intermit such pressure while returningfrom G to H. The buck-horse or tablet, on which the skin to be operatedupon is placed, is shown in the drawing at I. Its mechanism is so simplethat an extended description is deemed needless, it being operated by asingle sliding bar, K, which can be raised or lowered by setscrews 70 k,to any desired elevation suitable for the effective operation of theagate or polishing-stone on the morocco. The slotted plate, of which twoviews are given in Fig. 3, is attached to the wheel E by means of astud-pin, f, serving as a shackle-pin for the lever D. It is alsoprovided with a shackle-pin, 9, so fitted to the slot as to be movablealong it at the will of the operator, this shackle-pin being for thepurpose of attaching the lever G to the wheel E. The slotted plate beingsecured to the wheel E at a tangent to its circumference, it willreadily be perceived that, by sliding the shackle-pin along the slot,its distance from the center of the wheel E-that is, from the primarypoint of motion-may be increased or diminished, and that such change ofleverage, acting upon the vibratory bar A through lever G, will producesuch movements of said vibratory bar and the various instrumentalitiesconnected therewith, as has been described.

I claim The double crank F F and compound lever D a, or theirequivalents, in combination with the fly-wheel E for the purpose ofimparting reciprocating motionto a suspensory and intermittentprogressive rectilinear pressure to the tool, as and for the purposespecified.

GEORGE OROSSLEY.

Witnesses:

J osEPH KENWORTHY, THEO DmDRICHs.

